Spark-extinguisher.



A. BURNS..

SPARK EXTINGUISHER.

APPLICATION FILEDAQGJ 18. mm.

Patented May 7,1918;

nnrrn I AL BURNS, 0F SUNSET, IDAHO.

' SPARK-Environments.

Specification of Letters Patent.

Patented May "3, 1%18.

Application filed August 18, 191?. Serial No. 186,936.

character, which is adapted for use in connection with a railway locomotive, while in no sense restricted to this use, and automatically thrown into operation, whenthe throttle lever is opened for supplying steam to the cylinders of the engine.

A further object of. the invention is to provide apparatus of the above mentioned character, which is simple in construction,

inexpensive to manufacture, strong and durable.

' Other objects and advantages of the invention will be apparent during the course of the following description.

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In the adcompanying drawingsforming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is aside elevation, partly diagrammatic, of apparatus embodying my invention, showing the same applied to a railway locomotive, and,

Fig. 2 is a detail section'through the auto.

' inatic valve structure. a

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, "the numeral .5 designates the boiler of a railway-locomotive,

provided'with a smoke stack 6: The numeral 7 designates the usual steam supply pipe, having communication with the steam dome 8 and the steam chest 10 of the locomotive. The supply pipe 7 is equipped with the usual throttle valve 9, operated hy the throttle lever (not shown) in the usual manner. W hen the steam is supplied into the steani chests 10 the pistons of the engine the usual manner.

My apparatus comprises a storage tank 11, suitably secured to the boiler 5 and I 1 adapted for the reception of a liquid fire-extinguishing chemical, held therein under suitable pressure. I may employ water charged with carbon dioxid gas, While it is to he understood that any other suitable liquid chemical may be employed. Connected with the tank 11 is an outlet pipe 12 having a needle valve 13 connected therein, adapted for adjustment for controlling the volume of fire extinguishing chemical fed through the pipe 12. The pipe 12 dis charges into the interior of the stack 6, preferably near its lower end.

snares arana? critics. Q

Connected in the pipe 1'2 is across shaped casing 14 of an automatic valve structure.

.The horizontal portion 15 of this casing is connected in the pipe 12.

As more clearly shown in Fig. 2, a reciprocatory valve 16 is mounted to reciprocate in the vertical portion 1? of the casing 14, and when in the lowermost position, to completely cover the bore of the horizontal portion 15, thus preventing the escape of'the chemical from the tank 11; Rigidly connected with the lower end of the valve 16 is a rod 18, connected 7 with a plunger 19. This plunger is adapted to engage when: in the lowermost position; rigidly secured to" The lower end of stop members or lugs 20, the vertical portion 17. this vertical portion is connected with a pipe 21, in turn connected with the'pipe7. This pipe 21 has a pressure reducing valve 21 connected therein, whereby a suitable amount of steam will be supplied into the lower end of the vertical portion 1'7, to act I upon the plunger 19 and unseat the valve 16, when the throttle valve 9 is opened.

The upper end of the vertical portion 17 carries a cap 22, preferably having screwthreaded' engagement therewith. This cap engages a suitably stiff compression spring 23, contacting with, the upper end of the valve 16, to normally retain the same in the lowermost position.

The operation of lowsz'. v

When the engineer starts the engine, the throttle valve 9 is opened in the usual manner, and pressure passes through pipe 7 into the steam chest 10. A suitable amount of this pressure passes from pipe 7 through pipe 21, into the lower end of the vertical portion 1'5, beneath the plunger 19. This pressure raises the plunger and unseats the valve 16. This movement of the valve 16 uncovers the bore of the horizontal port on 15, allowing the liquid tire-extinguishing chemical under pressure in the tank 11, to escape through the pipe 12, to the stack 6.

the apparatus is .as fol-- This chemical being introduced intothe stack serves to extinguish the sparks therein.

While I have shown and described my apparatus as applied to a railway locomotive, such showing is for the purpose of illustration only, and it may be used in connection With any steam generating plant.

It is to be understood that the form of my invention herewith shown and described is to be taken as apre'terred example of the same, and that various changes in the shape, size, and arrangement of parts niay be re sorted to without departing from the spirit of the invention or the scope of the subjoined claims. I Y 1 7 Having thus described my invention. I claim i 1. Apparatus ot' the character described,

I comprising a storage tank for holding a fire extinguishing chemical under suitable pres- I sure, an outlet pipe connected with the tank and leading to the stack of the engine, a pressure operated valve connected in the pipe, and a pipe connected with the pressure operated valve and adapted for connection with the steam supply pipe of the engine.

2.; In apparatus of the character described, a storage tank for holding a fire extinguishing chemical .under suitable pressure, an outlet pipe connected with the tank and leading to the stack of the engine, a valve connected in the outlet pipe, pressure operated means to shift the valve, and a pipe connected with the pressure operated means and adapted for connection with the steam supply pipe of the engine.

In testimony whereof I atlix my signature in presence of two witnesses.

v AL BURNS. fitnesses:

Ensn': M. Ryan", Mrs. En \Vmrn. 

